ARSENE WENGER has challenged his Arsenal stars to show they have what it takes to break back into the top four by beating Manchester United tomorrow.

The fifth-placed Gunners have slumped to successive defeats at Fulham and Swansea and are four points behind Chelsea in fourth.

Wenger feels a confident display against United, who thrashed them 8-2 at Old Trafford last August, would be the perfect response.

He said: "This is a big game that comes at a time when we want to convince people we are capable of coming back into the top four. There is no better opportunity than Man Utd.

"We are really frustrated because we made the minimum of our last two games. We were twice leading and lost them both.

"Our very strong run ended in a way that is difficult to accept because everything went against us in the two games. But we have to accept that and win our game on Sunday. The result in August has nothing to do with that, we cannot wipe it out. That will not be an excuse not to beat them. It is over.

"You focus on what is in front of you and you try to do as well as you can."

The 62-year-old Arsenal boss, who could be missing on-loan Thierry Henry due to a calf problem, added: "I am on earth to try to win games. I always feel big pressures but that is a positive because you always hope to do it and you have the confidence to do it."

United boss Sir Alex Ferguson doesn't expect Arsenal will be any more motivated than usual despite the fact that 8-2 scoreline was their biggest defeat in 114 years.

The Old Trafford boss said: "I have never used revenge as part of my motivation.

"A score like that rankles but you have to forget it and I'm sure Arsene did that.

"It won't be as open as the last time - there is no chance of that. They have lost only six goals at home this season so it will be tough."